As some of you have heard, flow in the Henry’s Fork at St. Anthony dropped suddenly at around 4 p.m. on Thursday, October 23rd. Flow dropped from 1050 cfs to 622 cfs over a one-hour-period and then increased to 1080 cfs over the next 45 minutes. The river bottom was briefly exposed in shallow areas along the banks and in side channels. We received a report that some small fish were stranded and that brown trout redds were exposed. The event was short enough that gravel in the redds most likely remained saturated.
Last week, Fall River Rural Electric Co-op finished installing an inflatable rubber bladder on the top of Chester Dam, completing all construction activities at the dam. The co-op expects to inflate the rubber bladder and begin full operation of the power plant at the end of March.